alat metrologi frekuensi optik, alat pengukur parameter antena, alat pengukur resistansi, alat pengukur voltase, alat pengukuran karakteristik tabung vakum/tabung hampa, Amperemeter, antenna parameter measuring apparatus, aparat dan instrumen pengukur listrik, aparat dan instrumen pengukur magnetik, capacity measuring instruments, circuit testers, detektor pengukur elektromagnetik, electric indicators, electricity measuring apparatus and instruments, electromagnetic measuring detectors, electronic equipment and devices for fusion splicing of optical fibers], fiber optics connector, galvanometer, indikator aliran listrik, indikator fase, indikator kehilangan aliran listrik, indikator kehilangan listrik, konektor serat optik, magnetic measuring apparatus and instruments, magnetometer, meter frekuensi, ohmmeter, ohmmeter (alat pengukur tahanan listrik), optical frequency metrology devices, oscillators, osilator (oscillators), osilograf, penguji sirkuit, pengukur amper, Pengukur dan penguji magnetik, pengukur frekuensi, pengukur jam watt (watt hour meters), pengukur watt, peralatan dan alat elektronik untuk penyambungan fusi serat optik[Magnetic meters and testers, peralatan untuk mengukur kapasitas, phase indicators, resistance measuring devices, vacuum tube characteristic measurement device, voltmeter, watt hour meters, Wattmeter